package com.wangxiaotao.springcloud.controller;

import com.wangxiaotao.springcloud.entities.CommonResult;
import com.wangxiaotao.springcloud.entities.Payment;
import com.wangxiaotao.springcloud.lb.LoadBalancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @author Wangxiaotao
 * @create 2021-09-05-21:51
 */
@RestController
@Slf4j
public class OrderController {

//    public static final String PAYMENT_URL="http://localhost:8001";
    public static final String PAYMENT_URL="http://CLOUD-PAYMENT-SERVICE";

    @Resource
    private LoadBalancer loadBalancer;

    @Resource
    private DiscoveryClient discoveryClient;

    @Resource
    private RestTemplate restTemplate;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        return restTemplate.postForObject(PAYMENT_URL + "/payment/create", payment, CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id")Long id){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
    }

    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> getPayment2(@PathVariable("id") Long id){
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL+"/payment/get/"+id,CommonResult.class );
        if(entity.getStatusCode().is2xxSuccessful()){
            return entity.getBody();
        }
        return new CommonResult<Payment>(444,"操作失败",null);
    }

    @GetMapping(value = "/consumer/payment/lb")
    public String getPaymentLB(){
        List<ServiceInstance> instances = discoveryClient.getInstances("cloud-payment-service");
        if(instances==null || instances.size()<=0){
            return null;
        }
        ServiceInstance serviceInstance=loadBalancer.instance(instances);
        URI uri = serviceInstance.getUri();
        return  restTemplate.getForObject(uri+"/payment/lb",String.class);
    }

    @GetMapping(value = "/consumer/payment/zipkin")
    public String paymentZipkin(){
        String result = restTemplate.getForObject("http://localhost:8001"+"/payment/zipkin/",String.class);
        return result;
    }
}
